2 layers100 × 120 mm
Dcc station
cc90202/DCC-esp32
DCC command station for ESP32-C6 — NMRA-compliant model railroad controller in Rust
82 parts12
2 layers99.5 × 75 mm
OctaviaCarbonChallenge
KeenanKE/OctaviaThis project involves the design of a Custom Carrier Board for the Raspberry Pi Compute Module 4 (CM4) and an Electrical Panel layout for a 3-phase 415V 32A industrial supply.
- Size
- 99.5 × 75 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 71
- Nets
- 113
- Pads
- 433
- Tracks, vias
- 278, 35
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 20 Mar 2026
- Updated
- 21 Mar 2026
Overview
OctaviaCarbonChallenge is an open-source printed circuit board by KeenanKE, from the KeenanKE/Octavia repository on GitHub. It is a 2-layer board of 99.5 × 75 mm with 71 parts on 113 nets, routed with 278 tracks and 35 vias.
It is built around the MAX485ED, TPS54302 and SS34. Its parts include 16 capacitors, 12 resistors, 10 connectors, 8 diodes and 3 ICs. It belongs with the computers and single-board computers boards of this library.
Main components
3README
README.mdOctavia Carbon Challenge
CM4 Carrier Board & Electrical Panel Design
Overview
This project involves the design of a Custom Carrier Board for the Raspberry Pi Compute Module 4 (CM4) and an Electrical Panel layout for a 3-phase 415V 32A industrial supply.
Key Features:
-
CM4 Carrier Board:
- Interfaces: Ethernet, RS485 (2 independent channels), SPI, I2C, UART.
- Power Supply: 12V-24V DC input with reverse polarity protection, ESD, and over-voltage protection.
- RS485 Protection: High voltage protection (up to 24V) and termination resistor options with jumpers.
- Mezzanine Connector: Used for CM4 interface with all required signals (Power, Ground, SPI, UART, etc.).
- Status LEDs: Power and activity indicators.
- PCB Layout: Impedance control for high-speed signals (RS485, SPI), grounding, and thermal management.
-
Electrical Panel Design:
- 3-Phase 415V Supply for a vacuum pump (BSC SRV300B) and a 24kW boiler (DM24-0.8).
- Protection Devices: Proper fuses, breakers, and control components following industry standards for safety and reliability.
Design Considerations:
- High-voltage protection, signal integrity for industrial communication, and ease of maintenance for the electrical panel.
- Test points and jumper pads for configuration and troubleshooting.
This design ensures a robust interface between industrial systems and the Raspberry Pi Compute Module 4 for automation tasks.
Parts
71| Qty | Value | Footprint | References |
|---|---|---|---|
| 11 | TestPoint | TestPoint:TestPoint_Bridge_Pitch2.54mm_Drill1.0mm | TP1, TP2, TP3, TP4, TP5, TP6, TP7, TP8, TP9, TP10, TP11 |
| 8 | MountingHole_Pad | MountingHole:MountingHole_2.5mm_Pad_Via | H1, H2, H3, H4, H5, H6, H7, H8 |
| 6 | 100n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C2, C3, C4, C5, C6, C7 |
| 4 | 0.1u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C9, C10, C14, C15 |
| 4 | 1N4148 | Diode_SMD:D_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D5, D6, D7, D8 |
| 4 | Conn_01x04_Pin | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J5, J6, J7, J9 |
| 3 | 10u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C8, L1 |
| 3 | Conn_01x06_Pin | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J4, J8, J10 |
| 2 | 120 | Jumper:SolderJumper-3_P1.3mm_Bridged2Bar12_Pad1.0x1.5mm_NumberLabels | R9, R10 |
| 2 | 200 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R11, R12 |
| 2 | 22u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C11, C12 |
| 2 | 4K7 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R2, R3 |
| 2 | Conn_01x02_Pin | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J11, J12 |
| 2 | DF40HC_3.0_-100DS-0.4V_51_ | mezzanine connector:HRS_DF40HC_3.0_-100DS-0.4V_51_ | HIROSE CONNECTOR, J1 |
| 2 | LED | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D3, D4 |
| 2 | MAX485E | Package_SO:SOIC-8_3.9x4.9mm_P1.27mm | U2, U3 |
| 1 | 1.5SMCxxA | Diode_SMD:D_SMC | D1 |
| 1 | 100K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R7 |
| 1 | 105K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5 |
| 1 | 10K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1 |
| 1 | 13K3 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R8 |
| 1 | 49.9 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R6 |
| 1 | 511K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4 |
| 1 | 75p | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C13 |
| 1 | Barrel_Jack | Connector_BarrelJack:BarrelJack_Horizontal | J2 |
| 1 | Polyfuse 2A | Fuse:Fuse_0805_2012Metric_Pad1.15x1.40mm_HandSolder | F1 |
| 1 | SS34 | Diode_SMD:D_SMA | D2 |
| 1 | TPS54302 | Package_TO_SOT_SMD:SOT-23-6 | U1 |
Questions
How big is the OctaviaCarbonChallenge PCB?
It measures 99.5 × 75 mm and has 2 copper layers, 1.6 mm thick.
What parts does the OctaviaCarbonChallenge use?
71 parts, built around the MAX485ED, TPS54302 and SS34. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the OctaviaCarbonChallenge KiCad files?
From the KeenanKE/Octavia repository on GitHub, at the commit this page was made from: the board is OctaviaCarbonChallenge.kicad_pcb and its schematic OctaviaCarbonChallenge.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the OctaviaCarbonChallenge design in my own project?
Its repository states no licence, so its author keeps all rights: ask KeenanKE before reusing the design.
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